The Sources of Surface Defects in Castings Produced in Automated Process Lines

• Autorzy: Wrona R. , Brzeziński M. , Ziółkowski E.

Identyfikatory

DOI

10.1515/afe-2015-0086

• Języki publikacji: EN

Abstrakty

EN

This study summarises the research efforts undertaken in iron foundry plants in which the process are mostly automated and mechanised. The research program was limited in scope, focusing on causes of surface defects in castings products that are attributable to the bentonite-containing sand and the mould system. One of the potential roots of surface defects is heterogeneity of sand grains, containing lumped ball-shaped grains and irregular pellets with a layered-structure. The moisture contents of those lumped grains is different than the moisture level required in the process, besides these grains may contain various elements and metallic compounds which, when cast into moulds, may react with molten metals in an uncontrolled manner. As a result, surface defects are produced, such as surface blowholes, burst penetration, sand holes, slag inclusions, pinhole porosity. This study investigated the efficiency of key sand preparation and moulding machines and installations integrated into the casting process line. The efficiency of machines and installations is defined in terms of quality parameters of sand mix and moulds, which are associated with the emergence of surface defects on castings.

Słowa kluczowe

EN

surface defect; sand mix; casting production

PL

wada powierzchniowa; masa formierska; produkcja odlewnicza

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 4
• Strony: 91--94
• Opis fizyczny: Bibliogr. 5 poz., rys., wykr.

Twórcy

autor

Wrona R.

• AGH University of Science and Technology, Reymonta 23, 30-059 Kraków, Poland

autor

Brzeziński M.

• AGH University of Science and Technology, Reymonta 23, 30-059 Kraków, Poland

autor

Ziółkowski E.

• AGH University of Science and Technology, Reymonta 23, 30-059 Kraków, Poland

Bibliografia

• [1] Baler, J., Koppen, M. (1994). Manual casting defects, Wyd. IKO-Erbsloh, wyd. I (in Polish).
• [2] Karsay, S.J. (1992). Ductle Iron Production, IT-Feret Titane Inc.
• [3] Zych, J. (2001). Analysis of casting defects: selected issues laboratory. Wyd. 2 popr. i uzup. - Kraków Uczelniane Wydawnictwa Naukowo-Dydaktyczne. Kraków (in Polish).
• [4] Guzik, E. (2015). Research EDS JED 5500LV. Department of Engineering and Composites cast, Faculty of Foundry Engineering, AGH Kraków (unpublished) (in Polish).
• [5] Wrona, R., Stawowy, A., Macioł, A. (2006). Fundamentals of engineering design foundry, PANDIT, Kraków (in Polish).